Watch: MLB Investigates Blue Jays Player for Allegedly Using Gay Slur

Officials from Major League Baseball launched an investigation into a Toronto Blue Jays player for allegedly using a gay slur towards a rival athlete during a Wednesday night game, USA Today reports.

Blue Jays outfielder Kevin Pillar, 28, was struck out during the seventh inning by Atlanta Braves pitcher Jason Motte. According to witnesses and lip-readers, Pillar yelled "faggot" toward the mound before other players came to calm down the athlete, The New York Post reports.

"It was immature, it was stupid, it was uncalled for," Pillar said after the Blue Jays lost the game, though he did not explain what he meant by "it."

"It's part of the game, it's just, I'm a competitive guy and heat of the moment," he went on to say. "Obviously I'm going to do whatever I've got to do to reach out and apologize and let him know he didn't do anything wrong, it was all me."

This isn't the first time a Blue Jays player has come under fire for using a gay slur. Back in 2012, the team suspended Yunel Escobar for three games after he wrote a gay slur in Spanish on his eye black.